Wrist watch



Aug. 11, 1931.

S. MATHEZ WRIST WATCH Filed Dec.

i Patented Aug. ll, 1931 UNITED STATES 'PATENT OFFICE SAMUEL MAT-EEZ,Ol' BROOKLYN, YORK, ASSIGNOB TQGEOBG P. DI, 0l

. BBOILINE, MASSACHUSETTS f .wmsm WATCH appunti@ mea member 1a, 1927.senil no. saam.

My present invention has to do with wrist watches of a novel type, inwhich there are two open ended arms secured to thewatch case or body,and intended to surround the wrist of the wearer but preferably not inContact with each other on the inside -of the wrist. One or both ofthese arms is hin ed to the watch-case and the hinge is provi ed withlocking means so that when in position on the wrist, the arm is heldpositively against movement about the axis of the hinge. The arms arealso preferably made of some material which can be shaped to fit thewrist of the wearer, the most suitable being celluloid or some other'material'which will soften under heat so that itl may be shaped to fitthe wrist of the wearer. A wrist watch of the type just described is notmy invention and my present invention is gb an improvement thereon. Theobject of the resent invention is to provide a more -satis-l actoryhinge lock in combination with the other'essential parts of a .watchcase of the foregoing character. f `The invention will be more fullyunderstood from the followingl description 'when` taken in connectionwith the accompanyin drawings and the novel features thereof wi bepointed out 4and clearly defined in the a0 claims at the close of thisspecification.

- Fig. 1 is a plan view of a watch and case embodying my invention, themovable arm.

support the enlarged being shown 1n its open position in dotted lines.Fig. 2 is a front elevation of the part shown in Fig. 1. v

Fig. 3 is arear elevation. v x Fig. 4 is a perspective showing the hingeopened.

Fig. 5 is a section on line 5-5 ofl Fig. 2', looking in the direction ofthe arrows. Fig. 6 is a section'on 1ine66 of Fig. 1, looking in thedirection of the arrows.

Fi 7 is an inside view similar to Fig. 3, and s ows my invention in amodified form. Fig. 8 shows this vhinge opened. Y, Fig. 9 is a sectionon line 9- 9 of Fig. 7, looking in thev direction of the arrows.

Fig. 10 is' a section on line 10-10 .of Fig. 6o 7 looking in `thedirection of the arrows.

I channel-shaped cli "which enter from t e sides ofthe arm.

" ble hinge non 2o (Figs. s a s).

Referrin now to the drawingsgat 11 is shown the ody of the watch-caseand at 12 the rear cover. At 13 is shown referably a fixed armextension,this being ormed inp tegral with the case 11 or integrally secured 55thereto. -This arm member is' preferabl narrowed, as shown at a, and ischanne sha ed in cross section,y see Fig. 6, to receive the inner end ofthe arm 14, preferablygmade of celluloid. The inner end of the celluloidarm is widened, as shown at b, td fjit the contour of the interior ofthis ortion of the member 13, 'and is secured 1n place by a v.15' andscrews 16-1I6 t will therefore be seen that'by loosening the two screws16-,16 the clip 15 may be taken oi and the arm 14 taken out of the arm,member.13, when it isdesired for any reason` to replace the celluloidarm member '14 by 7o another. In practice it is found desirable tosupply celluloid arms of different colors or shapes, and theconstruction described forms a convenlent means of accomplishing this.

The movable arm 17 is secured to the mova- 75 member 18 in the same way.

At 17 is shown the movable arm extension which is connected with theywatch case body lnarrowed portion A18a adapted to receive and rtionc of'the arm 17. The member 18 1s provided with an outwardly dared orenlarged portion 18b at its inner end carryin hlnge eye members 18o anda latch mem r or lockin device preferably in the form of hooks s own, asa wholeat 19. The member 19 is preferabl l in the form of a split sleeveprovided wit spaced slots 20 inits `outer wall, and houses a pair ofpins 21, the outer ends of which project through the top and bottomfianges of the portion 186 and are urged outwardl to locking position bymeans of a spring 21a interposed between their opposed inner ends (Fig.5). The ins 21y carry laterallydi ne. latch mem o r hook portions 22 w:ich projectthrough the In the form shown the watch-case body 11 yisprovided at the end adjacent the movable arm member 17 with a plate 23secured to the case in any suitable manner. .This plate has an integralsubstantially right angularly disposed flange or latch plate member 23aprovided with slots or openings 23h and with a hinge e e member 24, thelatter being alined with the eye members 18o and secured in suchalinement by means of a pxintle (not shown) to maintain the movable ingemember and the Watch case together. The slots or holes 23?) arepositioned to register with the latch members 22 when the movable arm 17is swun to a closed position as shown in full lineaig. 1. A

The heads or hook ends of the latch members 22 are enlarged to providelateral extensions or lips 22a having convex outer faces or camsurfaces, Fi 5, adapted to engage the inner face of t e flange or latchmember 23a at the slots or openings 236, ride over the plate at pointsadjacent the other ends of the slots, and engage the inner face of themember 23a at the edges of` the slots 23b, when the parts are broughtinto register, thereby locking the movable arm extension and Watch caseagainst relative movement and preventing said arm member and hinge fromswinging about the hinge pintle, which would release the watch from thewrist of the wearer. the latch members 22 from engagement with theflange 23 so as to swing the arm 17 to an open position so that-thewatch may be removed from the Wrist, pressure must be appliedwto -theends of both'of the pins 21y to cause the inward movement of these pins-thereby releasingy the lips 22a from engage` ment with the e ges of theflange 23a. The depression of onevof the pins 21 is insuiiicient torelease the parts. It will be seen therefore that the parts arelmaintained in fixed relation against accidental release, theconstruction described eliminating the possibility of the movable armswinging about its hinge pint-le and permitting the Watch to fall oi thewrist of the wearer.

Then the parts are closed as shown in Fig. 3, it will be seen that themember 18 and thelatch plate 23 serve to completely conceal the member19, the onl parts of the locking or latch mechanism s owing being thehook ends or projections 22 and the outer ends of the pins 21.

In Figs. 7 to l0 inclusive I have shown a modified form of hinge memberand lock.

-In these iigures, the-fixed arm extension 130 carrying the arm 140 issubstantially like the corresponding member 13 of the preceding figures,the arm extension being formedl integral with the case 110 or integrallysecured thereto. The enlarged inner end 'b of the arm 140 is preferablysecured in position in the hinge member 130 To releasev V180 foractuatin about its hinge pintle, it is necessa by means of a plate 150adapted to be held 1n position upon the inner face of the hinge member130 through the medium of screws 160 threaded into fixed sleeves 165carried by the hinge member.

At- 180, I have shown a movable hingemember or housing generallyv likethat of form of a pin 200 having a reduced shank portion 201 having atits inner end a lateral projecting portion or nose 202e provided with aconvex outer face. A coil spring 203 within the sleeve'190 surrounds theshank 201. One end of this spring engages the end wall of the sleeve,the opposite end engaging the shoulder of the pin 200 so as to normallyproject the end of the pin 200 outwardly through one of the flanges ofthe hinge member 180. y It will be noted that by providing a pair ofparallel members 190 each adjacent one ofthe ianges of the member 180, apin 200 will project through an opening in each of the flanges so as toprovide means on opposite sides of the member the latch members 202. v

The end of te watch case body 110 to which the hinge member 180l isconnected is provided with a fixed hinge eye 240 adapted to be alinedwith the hinge eyes 1800 and receive a pintle for maintaining the partstogether. The case is also pro- Avided at this end with a preferablycentrally disposed projecting latch plate or extension 230, the upperand lower edges 23041 of which i are caused to engage the convex outerfaces of the latch members or hooks 202 when the arm 170 is swunginwardly toward the plate 230, causing the noses 202e to ride over theplate edges until the parts are locked in which.' position they areshown in Figs. 7 and 9, with the ends or noses 202aengaging the outerface of the plate or extension 230 to give a neater appearance to thatpart of the Watch and also to prevent an uncomfortableness tothe'wearer. Thev thickness -of the hinge member and plate however isless than t at of the'watch case and cover. To release the arm andpermit itto swing to apply pressureto the ends of both ov the pins 200.The depression of one pin only is insufficient to release the arm.y Byproviding such a construction the accidental release of the parts isprevented. In both forms 'of the invention the hooks 22 4and .v 202 areadapted to engage the inner face of the plates 23a and 230,respectively, when the parts are locked together.

I claim:

1. In a Wrist Watch, a Watch case, afixed arm extension connected Withsaid case, a movable arm extension having a hinge mem.- ber connectedwith said case, a slotted plate connected with the Watch case adjacentsaid v hinge member, and latch members carried -by said hinge memberhaving portions adapted to engage the slotted .plate When the parts aretogether to lock the movable arm extension.

2. In a Wrist Watch, a Watch case, apair of arms adapted to fit theWrist, a hinge connecting one arm to the case, a plate projecting fromthe case and having alined slots therein, and oppositely movable. springactuated hooks carriedby the hinged army adapted to engage the edges ofsaidk slots, said spring actuated hooks being in a line with each other.

3. A wrist watch comprising a Watch case, a pair of open arms shaped toclasp .the

Wrist, a casing comprising substantially enclosing Walls carried in partby said case and in part by an arm, a hinge for hinging the arm to thecase and a device for locking the arm, -said hinge and device bothextending into said casing.

- 4. Apwrist Watch comprisin a watch case, a pair of open arms shape toclasp the Wrist, a casing comprising substantially enclosing Wallscarried in part by said case and in part by an'arm, a hinge for hingingthe arm to thecase, and a device extending into said casing or'lockingthe arm. i 5.' A wrist Watch comprisin a Watch case, a pair of open armsshape to clasp the wrist, a housing carried by the arm and having anopening at the back side of ythe case, a plate carried by the case andnormally extending over said opening, meansv for hinging the housing tothe case, and means for releasably locking the housing to said plate.

. 6. In a Wrist Watch a watch case, a pair of arms adapted to t theWrist, a hinge connecting one arm to the'case, a casing having anopening at the back side of the Watch case, a plate projecting from thecase into said openin and having a slotted portion therein, anoppositelyfmovable alined members shiftably projecting through oppositesides of said casing into the interior thereof and having hookscooperating with edges of said slotted portion.

In testimony whereof I aliix m si nature. SAMUEL AT EZ.

